Christina Sun Gainey, MD
Gastroenterology Physician · Chapel Hill, NC
Christina Sun Gainey, MD is a gastroenterology physician with a practice address in Chapel Hill, North Carolina, and NPI 1306340559, issued on Mar 22, 2018. Check the license (North Carolina 2021-01712, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Christina Sun Gainey
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 2021-01712 NC
A164340 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4119B Bioinformatics Bldg 130 Mason Farm Road, Chapel Hill, NC 27599
- Phone
- (919) 966-3997
- Enumerated
- Mar 22, 2018
- Record last updated
- Mar 4, 2023
- Medicare enrollment
- Enrolled (PECOS I20260504007203); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 681 in North Carolina → Look up another NPI →
Verify Christina Sun Gainey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2021-01712Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average gastroenterology physician in 2024
66 Medicare Part D claims for 28 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- University OF North Carolina AT Chapel HillChapel Hill, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christina Sun Gainey among 681 gastroenterology physician records in North Carolina
Christina Sun Gainey, MD is one of 681 gastroenterology physician records with a practice address in North Carolina. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 92% of them.
- NPI issued2018 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2018 · median 2002 among the 498 with a school on file
- Record last updated2023 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in North Carolina
There are 681 gastroenterology physician records in North Carolina.
All 681 in North Carolina → Every provider in Chapel Hill → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Fried, MDChapel Hill, NC 275991699847095
- Lisa Gangarosa, MDChapel Hill, NC 275991508935800
- Ian Grimm, MDChapel Hill, NC 275991760551055
- Paul Hayashi, MDChapel Hill, NC 275991972538262
- William Heizer, MDChapel Hill, NC 275991164597969
- Hans Herfarth, MDChapel Hill, NC 275991538246574
- Sidney Levinson, MDChapel Hill, NC 275991760559850
- Ryan Madanick, M.D.Chapel Hill, NC 275991568460079
Common questions
What is Christina Sun Gainey, MD's NPI number?
Christina Sun Gainey, MD's National Provider Identifier (NPI) is 1306340559, issued on Mar 22, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Christina Sun Gainey, MD located?
The NPPES record lists a practice address at 4119B Bioinformatics Bldg 130 Mason Farm Road, Chapel Hill, NC, 27599. Phone: (919) 966-3997. Providers update this record themselves, so call before visiting.
How can I verify Christina Sun Gainey, MD's license?
NPPES lists North Carolina license number 2021-01712, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christina Sun Gainey, MD prescribe under Medicare Part D?
In 2024, Christina Sun Gainey, MD had 66 Medicare Part D claims for 28 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.